ueficon.c File Reference

#include <uefildr.h>

Include dependency graph for ueficon.c:

Go to the source code of this file.

Macros
#define	CHAR_WIDTH   8
#define	CHAR_HEIGHT   16

Functions
VOID	UefiConsPutChar (int c)
static UCHAR	ConvertToBiosExtValue (UCHAR KeyIn)
BOOLEAN	UefiConsKbHit (VOID)
int	UefiConsGetCh (VOID)

Variables
EFI_SYSTEM_TABLE *	GlobalSystemTable
static unsigned	CurrentCursorX = 0
static unsigned	CurrentCursorY = 0
static unsigned	CurrentAttr = 0x0f
static EFI_INPUT_KEY	Key
static BOOLEAN	ExtendedKey = FALSE
static char	ExtendedScanCode = 0

Macro Definition Documentation

CHAR_HEIGHT

#define CHAR_HEIGHT   16

Definition at line 11 of file ueficon.c.

CHAR_WIDTH

#define CHAR_WIDTH   8

Definition at line 10 of file ueficon.c.

Function Documentation

ConvertToBiosExtValue()

static UCHAR ConvertToBiosExtValue ( UCHAR  KeyIn )

static

Definition at line 68 of file ueficon.c.

{
    switch (KeyIn)
    {
        case SCAN_UP:
            return KEY_UP;
        case SCAN_DOWN:
            return KEY_DOWN;
        case SCAN_RIGHT:
            return KEY_RIGHT;
        case SCAN_LEFT:
            return KEY_LEFT;
        case SCAN_F1:
            return KEY_F1;
        case SCAN_F2:
            return KEY_F2;
        case SCAN_F3:
            return KEY_F3;
        case SCAN_F4:
            return KEY_F4;
        case SCAN_F5:
            return KEY_F5;
        case SCAN_F6:
            return KEY_F6;
        case SCAN_F7:
            return KEY_F7;
        case SCAN_F8:
            return KEY_F8;
        case SCAN_F9:
            return KEY_F9;
        case SCAN_F10:
            return KEY_F10;
        case SCAN_ESC:
            return KEY_ESC;
        case SCAN_DELETE:
            return KEY_DELETE;
    }
    return 0;
}

Referenced by UefiConsGetCh().

UefiConsGetCh()

int UefiConsGetCh

(

VOID

)

Definition at line 115 of file ueficon.c.

{
    UCHAR KeyOutput = 0;
 
    /* If an extended key press was detected the last time we were called
     * then return the scan code of that key. */
    if (ExtendedKey)
    {
        ExtendedKey = FALSE;
        return ExtendedScanCode;
    }
 
    if (Key.UnicodeChar != 0)
    {
        KeyOutput = Key.UnicodeChar;
    }
    else
    {
        ExtendedKey = TRUE;
        ExtendedScanCode = ConvertToBiosExtValue(Key.ScanCode);
        KeyOutput = KEY_EXTENDED;
    }
 
    /* UEFI will stack input requests, we have to clear it */
    Key.UnicodeChar = 0;
    Key.ScanCode = 0;
    return KeyOutput;
}

Referenced by MachInit().

UefiConsKbHit()

BOOLEAN UefiConsKbHit

(

VOID

)

Definition at line 109 of file ueficon.c.

{
    return (GlobalSystemTable->ConIn->ReadKeyStroke(GlobalSystemTable->ConIn, &Key) != EFI_NOT_READY);
}

Referenced by MachInit().

UefiConsPutChar()

VOID UefiConsPutChar

(

int

c

)

Definition at line 26 of file ueficon.c.

{
    ULONG Width, Height, Unused;
    BOOLEAN NeedScroll;
 
    UefiVideoGetDisplaySize(&Width, &Height, &Unused);
 
    NeedScroll = (CurrentCursorY >= Height);
    if (NeedScroll)
    {
        UefiVideoScrollUp();
        --CurrentCursorY;
    }
    if (c == '\r')
    {
        CurrentCursorX = 0;
    }
    else if (c == '\n')
    {
        CurrentCursorX = 0;
 
        if (!NeedScroll)
            ++CurrentCursorY;
    }
    else if (c == '\t')
    {
        CurrentCursorX = (CurrentCursorX + 8) & ~7;
    }
    else
    {
        UefiVideoPutChar(c, CurrentAttr, CurrentCursorX, CurrentCursorY);
        CurrentCursorX++;
    }
    if (CurrentCursorX >= Width)
    {
        CurrentCursorX = 0;
        CurrentCursorY++;
    }
}

Referenced by MachInit().

Variable Documentation

CurrentAttr

unsigned CurrentAttr = 0x0f

static

Definition at line 18 of file ueficon.c.

Referenced by UefiConsPutChar().

CurrentCursorX

unsigned CurrentCursorX = 0

static

Definition at line 16 of file ueficon.c.

Referenced by UefiConsPutChar().

CurrentCursorY

unsigned CurrentCursorY = 0

static

Definition at line 17 of file ueficon.c.

Referenced by UefiConsPutChar().

ExtendedKey

BOOLEAN ExtendedKey = FALSE

static

Definition at line 20 of file ueficon.c.

Referenced by Pc98ConsGetCh(), PcConsGetCh(), and UefiConsGetCh().

ExtendedScanCode

char ExtendedScanCode = 0

static

Definition at line 21 of file ueficon.c.

Referenced by Pc98ConsGetCh(), PcConsGetCh(), and UefiConsGetCh().

GlobalSystemTable

EFI_SYSTEM_TABLE* GlobalSystemTable

extern

Definition at line 16 of file uefildr.c.

Referenced by UefiConsKbHit().

Key

EFI_INPUT_KEY Key

static

Definition at line 19 of file ueficon.c.